PDF malware analysis — malicious · 0d99594fefbedea3

MALICIOUS

PDF

100.6 KB

MD5: 3a3c162519b2dfc066a9e32bbefdb8ec SHA-1: b36c084d431fe7be728db8cd4685fefa2b903d94 SHA-256: 0d99594fefbedea35a1e84ad713e4ef3e400790997dffe17dee1b6aa77617363

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains XFA form elements and an embedded JavaScript payload, strongly indicating an exploit attempt. The ML classifier and ClamAV detection confirm its malicious nature. The embedded script, though truncated, appears to be designed to download and execute a second-stage payload, a common technique for malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Embedded script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_00000246.bin` `6a36bf746b05404c0319c2542d668a8a38212da12ce092d8f01c97d55aa5ce29`	pdf-embedded-script	PDF raw stream script payload at offset 0x246	102264 bytes

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